There are a number of libraries and servers which help in exporting existing metrics from third-party systems as Prometheus metrics. This is useful for cases where it is not feasible to instrument a given system with Prometheus metrics directly (for example, HAProxy or Linux system stats).
These exporters are maintained as part of the official Prometheus GitHub organization:
There are also a number of exporters which are externally contributed and maintained. We encourage the creation of more exporters but cannot vet all of them for best practices. Commonly, those exporters are hosted outside of the Prometheus GitHub organization.
When implementing a new Prometheus exporter, please follow the guidelines on writing exporters Please also consider consulting the development mailing list. We are happy to give advice on how to make your exporter as useful and consistent as possible.
Some third-party software already exposes Prometheus metrics natively, so no separate exporters are needed:
This section lists libraries and other utilities that help you instrument code in a certain language. They are not Prometheus client libraries themselves but make use of one of the normal Prometheus client libraries under the hood. As for all independently maintained software, we cannot vet all of them for best practices.